KSZ8995X Micrel Inc, KSZ8995X Datasheet - Page 32

• Manufacturer Part Number: KSZ8995X
• Description: 5 Port 10/100 Switch With PHY And Frame Buffers
• Manufacturer: Micrel Inc

Specifications of KSZ8995X

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• Number Of Primary Switch Ports: 5
• Internal Memory Buffer Size: 64
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Fiber Support: Yes
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII/SNI
• Power Supply Type: Analog/Digital
• Package Type: PQFP
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1642 - BOARD EVALUATION FOR KSZ8995XA
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-1041

KS8995X
Notes:
148,800 frames/sec
M9999-120403
Address
Register 5 (0x05): Global Control 3 (continued)
1
0
Register 6 (0x06): Global Control 4
7
6
5
4
3
2-0
Register 7 (0x07): Global Control 5
7-0
Register 8 (0x08): Global Control 6
7-0
Register 9 (0x09): Global Control 7
7-0
Register 10 (0x0A): Global Control 8
7-0
Name
Reserved
Sniff mode select
Switch MII back
Pressure enable
Switch MII half
duplex mode
Switch MII flow
control enable
Switch MII 10BT
Null VID replacement
Broadcast storm
protection rate bit [10:8]
Broadcast storm
protection rate bit [7:0]
Factory testing
Factory testing
Factory testing
50ms/interval
1% = 74 frames/interval (approx.) = 0x4A
Description
Reserved
1 = will do Rx AND Tx sniff (both source port and
destination port need to match).
0 = will do Rx OR Tx sniff (Either source port or
destination port needs to match). This is the mode
used to implement Rx only sniff.
1 = enable half-duplex back pressure on switch MII
interface.
0 = disable back pressure on switch MII interface.
1 = enable MII interface half-duplex mode.
0 = enable MII interface full-duplex mode.
1 = enable full-duplex flow control on switch MII interface.
0 = disable full-duplex flow control on switch MII interface.
1 = the switch interface is in 10Mbps mode.
0 = the switch interface is in 100Mbps mode.
1 = will replace null VID with port VID(12 bits).
0 = no replacement for null VID.
This along with the next register determines how many
“64 byte blocks” of packet data allowed on an input
port in a preset period. The period is 50ms for 100BT
or 500ms for 10BT. The default is 1%.
This along with the previous register determines how
many “64 byte blocks” of packet data are allowed on
an input port in a preset period. The period is 50ms
for 100BT or 500ms for 10BT. The default is 1%.
Reserved
Reserved
Reserved
32
Mode
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
Pin SMRXD2 strap
option. Pull-down (0):
Full-duplex mode
Pull-up (1): Half-
duplex mode.
Note: SMRXD2
has internal pull-
down.
Pin SMRXD3 strap
option. Pull-down
(0): disable flow
control Pull-up (1):
enable flow control
Note: SMRXD3
has internal pull-
down.
Pin SMRXD1 strap
option. Pull-down (0):
Enable 100Mbps
Pull-up (1): Enable
10Mpbs
Note: SMRXD1 has
internal pull-down.
0
000
0x4A
0x24
0x24
0x24
December 2003
(1)
Micrel